We begin with a major victory. The arrest of a Mexican drug lord whose reach was far and wide. He was cruel, unforgiving in his ways and one of his main destinations right here in the United States. Tonight wakeen, tonight this is is what he looks like. Captured as the sun came up this morning at a resort he was staying. Investigators believed Mexican authorities were helped by American intelligence. In Chicago he was labeled enemy number one because of his drug supply. Was infiltrating that city. Tonight we have team coverage on how the American team coverage helped in the investigation. Peer air, good evening. Reporter: Tonight law enforcement after hunting him for more than a decade. There he is. The man known as Al Chappo, aka, shorty. Who runs the world's largest drug cartel in handcuffs surrounded by Mexican military offices. Wakeen, the leader of the Mexican drug cartel. Finally back in custody after 13 years on the run since bribing his way out of prison. How powerful. His cartel is believed responsible for an estimated 25% of the drugs entering the U.S. Marijuana. Cocaine. Her win. Through overdoses and associated murders. Sources say he was arrested 6:40 A.M. This morning by Mexican Marines provided in part by American immigration and drug enforcement agents. He was arrested in this hotel, in a resort town. 630 miles from Mexico City. No shots fired. The word's infamous criminal caught in seconds. Univision conducted a year-long investigation aired by fusion, our sister network. It's like the oh Sam bin laden of drug trafficking. Reporter: He was part of a networking drug cartel shipping drugs by the hundreds of tons into the U.S. You got what you were looking for. Reporter: I saw it firsthand at this checkpoint. This furniture had more than a ton of marijuana. Neatly packaged. There was so much bugs that it had to be destroyed at secret locations like this. In Chicago he was named public enemy number one, a title not used since the gangster Alka known. His cartel responsible for 80% of the drugs in Chicago. So rich, he made the Forbes magazine billionaires list. He was so important but sources tell me it won't be fatal. His organization is huge and entrenched. Thank you. I want to bring in investigative reporter from our cable partner fusion tonight because we know you have reported extensively on Al ca happo we have heard that he was responsible for 80% of the drugs on the streets of Chicago. Why did he target is that city? Reporter: Reporter: Chicago is the ideal place to distribute drugs across the midwest. Here in the United States We saw Pierre travel through those tunnels. He was extremely creative before the tunnels on how he got drugs in the U.S. Absolutely. Sub Marines submarines. He was business minded and creative and inventive. That he's some of the ways he brought drugs to the united States. He used that more than a decade ago to escape prison. Yes. He escaped from prison in a laundry bag. He used some of his connections inside the prison to escape from prison in a laundry bag and managed to stay free for 13 years until now. For 13 years until tonight. Thank you. From our cable partner, fusion. The team there covering this extensively this evening. One more note reaction from the white house issuing this statement. We congratulate the Mexican government on the capture. This is a significant achievement and our shared fight against organized crime, violence and drug trafficking.

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